Improved mode of securing rubber rolls to their shafts



l@uitrit gtst-rs @nicht @ffff GltlAllLES MANHEIM, OF NEW YORK, N. Y., ASSIGNOR TO HIMSELF AND E. L. PERRY, OF THE' SAME PLACE.

Letters Patent No. 67,440, aus August c, ,1867,

IMPRVED MODE OP SBGURING RUBBER ROLLS IO THEIR SHAFTS.

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lO ALL WHOM I'l MAY CONCERN:

Be it known that I, CHARLES MANHEIM, of the city, county, and State of New York, have invented a new und useful improvement in Rubber Rolls," and that the following description, taken in connection with the accompanying drawings, hereinafter referred to, forms a full and exact specification of the same, wherein I have set forth the nature and principles of my said improvements, by which my invention may be distinguished from all others of a similar class, together with such parts as I claim, and desire to have secured to me by Letters Patent.

The present invention relates more particularly to India-rubber rolls for wringing and other similar machines.

lleretofore rubber rolls have been prepared by first winding tightly upon the 'shaft a piece of cotton duck, rord, or other fibrous material, spirally or otherwise, and then forcing, by suitable machinery, the shaft thus wound through the rubber roll, the latter having been previously prepared with the hole through its centre longitudinally, of lesser diameter than the shaft, by which means the roll is stretched and forced upon the shaft, to which it adheres until a force greaiter than that employed to force it upon the shaft is applied; it then yields to such force, and turns upon the cord or strips of cloth, rendering the roll useless.

It has also been V'ou'ud that,"in the use of rolls thus prepared, the alkali used in the process of washing clothes will force itself between the rubber and the shaft of the roll, destroying the adherance of the former, and', by its action upon the latter, produce an oxide which stains and injures the clothes.

By the use of my invention these diiiiculties are avoided. It consists in the construction of a packing wound upon the shaft, and upon which the rubber roll lis vulcanized, and in the application of the same to the shaft, l

In constructing 'my packing I use cotton duck, or other fibrous or textile fabric, saturated or impregnated with India rubber or other vulcanizable gum under pressure. The fabric is passed between heavy rollers at the same time with the India rubber, and the amount of pressure applied is sufficient to stretch the cloth about twenty-five per cent. One hundred yards of fabric treated in this manner produce one hundred and twentyve yards of packing. The India rubber is forced between the meshes in the cloth, completely lling them, in such a manner as to leave mere shreds of the cloth, the use of which is to prevent elasticity. The packing, thus prepared, is cut into strips and wound about and around the centre shaft, from end to end, in a spiral direction, and in 'one or more layers, either continuous or separate, by holding such strips, as they are wound, at their full tension, or nearly so, when, over the surface so produced upon the shaft, the India rubber is placed to constitute the roll, where, in any proper manner, and by any of the ordinary modes, it is then vulcanized to the proper degree of elasticity, and being afterwards turned ofi1 in a lathe, is ready for use. By this process the rubber in the textile strip is also vulcanized, and a -complete and solid roll is formed around the shaft, and is prevented from turning thereon by the non-elasticity of the shreds or fibres.

By the application of the India.l rubber to the shaft, as abo've described, with a spirally wound packing, prepared withv vulcanizable gum, between it and the shaft, and its vulcanization, an attachment of India rubber to the shafts of rolls is produced that possesses all the strength and firmness requisite, and from many severe tests has been found to offer a most perfect resistance to the detachment of the India rubber from the roll-shaft.

In the accompanying plate of drawings my improvement in rubber rolls is illustrated- Figure 1 being-a view of the centre shaft to a rubber roll, in the direction of its length, showing it as spirally wound with cloth strips, and

Figure 2, a central longitudinal section of the roll when completed.

Similar letters of reference indicate like parts.

A, inthe drawings, represents the centre shaft to the roll; B, the packing wound spirally upon such shaft from end to end, between its end plates or disks C; and D the India rubber coating to the shaft of the roll, applied to it over the part wound with the cloth strips. I

The shaftl A is first taken and wound in either one or more layers with the packing, at the same time drawing and holding it at their full tension, or nearly so, when, then properly securing the ends of such packing,

the rubber is'applied to the outside thereof, with the proper' degree of thickness, and thewhole roll then placed in any suitable heater for vulcanizing -the India rubber composing the same, or in any other proper manner' treated to vulcanize the India rubber to the proper' degree of elasticity; after which, by turn'ing o'` the lIndiarubber exterior or coating in a lathe or other suitable machine, the roll is finished and ready for use.

By the application ofthe packing to the shaft, and interposing it between it andthe India-rubber exterior, an attachment is produced, after the vulcanization 'of the India rubber, that is most perfect, strong, rin, and rigid, and to the highest degree capable of resisting all strain or tension thereon, which otherwise would tend to detach or even to loosen it, as well also as the action of water, even if heated toa high degree et heat; the importance of which, especially in Inda-rubber rolls for wringing, and other similar machines, is obvious.

Having thus described my invention, I claim us new, and desire to secure by Letters Patent- A rubber roll, having its inner packing of cloth and rubber wound spirally upon and vulcanized to the shaft, together with its outer coating, as herein set forth, whereby t-he rubber is prevented from turning upon the shaft or packing, substantially as'described and for the purpose specified.

The above specification of my invention signed by me this 9th day of March, 1867.

CHARLES MANHEIM.

Witnesses:

WM. F. MeNAMARA, ALBERT W. BROWN. 

